<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>

</head>

<body>
    <div id="box">

        <h1>注册</h1>
        <form action="">
            <span>用户名:</span><input type="text" name="username"><br>
            <span>密　码:</span><input type="text" name="password"><br>
            <button type="submit" id="btn">提交</button>
        </form>
        <a href="login.html">已有账号去登录</a>

    </div>

</body>

</html>